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andriod09
Group Title
Quadratic Equation question
How do i get from:
\[x=11\pm \frac{12160}{ 6 }\]
to the next part?
 2 years ago
 2 years ago
andriod09 Group Title
Quadratic Equation question How do i get from: \[x=11\pm \frac{12160}{ 6 }\] to the next part?
 2 years ago
 2 years ago

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andriod09 Group TitleBest ResponseYou've already chosen the best response.0
@jwheele1
 2 years ago

cos00155079 Group TitleBest ResponseYou've already chosen the best response.0
im working on those problems too im not that good but i would simplify 1216/ then.. which is?
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
well first of all.....write out two different equations to eliminate that +
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
@cos00155079 you doing the Life of Fred series?
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
you don't have to do that @jwheele1
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
i know you dont have to but its easier...its cool we wont do that then
 2 years ago

cos00155079 Group TitleBest ResponseYou've already chosen the best response.0
the what? nooo...
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
121  60 = ?
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
\[1\] \[21\]
 2 years ago

cos00155079 Group TitleBest ResponseYou've already chosen the best response.0
why 60/6 if it was a 61?
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
alright lets see now...
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
the equation is: \[x=11\pm \frac{ \sqrt{12160} }{ 6 } \]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
oh lawd....lol
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
sq rt of 121 = 11
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
whats with teh line over the 0?
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
its just how it is. not my doing.
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
well...it means that its a repeating number but its usually only after a decimal point...weird.
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
I have no idea what to do with the 60 and the line over it.
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
the original equation is: \[3x^{2}+11x+5=0\]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
any specific way she is wanting you to go about that?
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
its a messup about square roots.
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
or can we solve for x any old way?
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
yea, using \[ax^{2}+bx+c=0\] and the \[x=b\pm\frac{ \sqrt{b^{2}4ac} }{ 2a }\]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
the QuAdRaTiC ForMulA.....lol
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
ok so 3x^2 + 11x +5 = 0 ax^2 + bx +c
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
a = 3 b = 11 c = 5
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
\[11\pm \frac{ \sqrt{11^{2}4(3*5c)} }{ 2(3) }\]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
does that look right?
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
ignore the c next to the 5, lol dw:1348620564257:dw
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
dw:1348620625370:dw
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
i see where we screwed up now in the beginning
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
dw:1348620687638:dw
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
NOW......what has your teacher said to do with this?
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
because you can find common denominaters and put it all over one bar or you can leave it the way it is.
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
I teach my self. I am homeschooled, i use the LoF series.
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
well....you could work it out to this way if you wanted to.... dw:1348620830185:dw
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
the last answer i got was \[x_{1}\] and \[x_{2}\]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
OH yeah...i forgot this was all part of an original equation....this one might be too complicated for the quad formula. have you tried grouping method?
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
i mean factoring
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
and it was \[x=\frac{9\pm7} { 8 }\] I did the quadratic formula on all of these so far, its a quadratic formula page. they're supposed to use the quadratic formula
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
ok well then we must find exact values
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
the sq rt of 61 is 7.810249675906654
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
divided by 6 = 1.301708279317776
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
11 + 1.301708279317776 = ? 11  1.301708279317776 = ?
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
we need not find exact values, we need to find \[x_1\] and \[x_2\]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
x1 and x2 are exact values
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
it appears anyways...this one is ugly
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
x1 = 9.698291720682224, x2 = 12.30170827931778 lol
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
none of this seems right to me and its driving me nuts, lol
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
for sure you need to find the square root of 61
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
which is not what you have in your original problem at the top
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
http://www.mathsisfun.com/quadraticequationsolver.html
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
Heres your answer
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
its these: \[x_{1}=\frac{ 11+\sqrt{61} }{ 6 }\] and \[x_{1}=\frac{ 11\sqrt{61} }{ 6 }\]
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
thats what i would put....what you just put
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
this is what my brother says, who is in college.
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
i am also in college. I woudl also stop there...I thought it was weird that were were trying to find the actual value for x1 and 2
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
dw:1348621589793:dw
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
That is if you put it all under one common denominator which some teachers ask for...usually that is not what they want though
 2 years ago

jwheele1 Group TitleBest ResponseYou've already chosen the best response.2
it means the same thing but most people show it liek yoru brother did
 2 years ago

andriod09 Group TitleBest ResponseYou've already chosen the best response.0
w/e i have it and its done. thanks for any help!
 2 years ago
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